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GRAIN SEPARATOR.

Patented Mar. 5, 1889. 1/7 71 j (No Model.)

(No Model.) 2 SheetsSl1eet :2v

J. A. KRAKE.

GRAIN SEPARATOR.

No. 399,148. Patented Mar. 5, 1889.

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UNITED STATES PATENT @rrrcre...

JOHA A. KRAKE, OF BUFFALO, NEiV YORK, ASSIGNOR OF ONE-HALF TO JOSEPH BORK, OF SAME PLACE.

GRAIN SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 399,148, dated March 5, 1889.

Application filed July 20, 1888. Serial No. 280,491. (No model.)

To all whom it NZILII/ concern:

city of Buffalo, in the county of Erie and State of New York, have invented new and useful f Improvements in (,1rain-Separators, of which i the following is a specification.

This invention relates to certain improve ments in that class of grain-separators commonly known as fanninganills in which the grain is passed over a series of vibrating sieves and freed from its light impurities by a blast of air produced by a revolving fan.

The object of my invention is to improve the operation of this class of machines by equalizing the force of the blast over the entire width oi. the machine, and by improving the mechanism whereby the vibrating sieves are set in motion, and also to improve the construction of the machine in various details.

The invention consists of the improvements,

neeted with a hub, E, sewn-eel to the fanshaft by two outwardly-diverging arms or branches, The two arms of each. lilade are arranged with their inner ends in. tapering or \l-shaped sockets e, formed in the huh E, and are secured therein by screws or other suitable means. The inner ends of the arms 6 are preferably made round, and their contiguous portiims are (-hamfered. so to (it squarely against each other. The huh 15' is preferably divided longitunlinally to facilitate casting the huh, and the parts thereof are secured together by bolts, as shown in Figs. 5 and '7. ii this construction the arms are secured to the fan-blades near the center of the blades, thereby leaving theeyes d of the fan-easing unobslruetaul, and allowing a free ingress of air and producing an even and uniform lilast through the machine.

The

diverging arms form with the fan-blade a which will he hereinafter fully set forth, and

pointed out in the claims.

In the accompanying drawing wnsisling of two sheets, Figure 1 is a side elevation of my improved grain-separator. Fig.- 2 is a side elevation of one of the adj ustable hangers upon one of a vertical series of hrackctsj,

supporting the vibrating screens, on an enin line 5c 1:, Fig. i. Fig. 4: is a longitudinal sectional elevation of the machine. "Fig. 5 is a 3 horizontal section of the same. Fig. 6 is a fragmentary perspective view" of the feedhoard and a portion of the casing of the machine. l ig. 7 is a fragmentary sectional elc' vation of the huh of the fan.

. Like letters of reference refer to like parts in the several figures.

A represents the stationary frame of the machine; a, the side boards of the upper casing, and o the side hoards of the lower easing.

B is the feedhopper secured between the upper portions of the stationary boards a.

B is the upper shaking-shoe, and C- the lower shakingshoe.

D is the fan-case,provid.ed in opposite sides with eyes or openings cl in the usual manner, and (1 represents the horizontal fan-shaft turning in hearing (1 secured to the stationary frame A.

E are the fan-blades, each. of which is contriangular frame, which consl rin'tion renders the connection between the hub and blade rigid and prevents warping of the arms and blade. I

f re n'esenis the screen of the upper shaking-shoe, which is su miortcd at its inner end formed on metallic plates 7, secured to the inner sides of the shaking-shoe at or near its inner end, and whereby the inner end of the screen can he raised or lowered to give the same the proper inclination.

The screen f is provided at its opposite end with laterally-projeeting pins 1, which engage in one of a series of undercut notches, 9',

formed in plates Q2, secured to the inner sides of the shoe at its outer end. By placing the supporting-pins of the screen in a higher or lower pair of notches its outer end can he adjusted to the proper height. The shoulders of the undercut notches g retain the pins 9 in the notches and prevent the same from being accidentally moved out of the notches. The plates f serve as cleats,\vhich stiffen the sides of the shaking-shoe and prevent warping thereof.

H is a feed-board arranged at the upper end of the upper shaking-shoe, B,helow the feedhopper B. The feed-hoa rd H is provided with a removable extension, H, the inner end of which abuts against the outer end of the board. II and is flush with the latter. The

extension II is provided at its outer end. with.

latcrally=projecting pins or studs 71, which are arranged in inclined notches 7/, formed in the upper edges of the shaking-shoe. The

inner end of the removable extension is supported by a bar, 7L2, secured to the upper side of the extension and extending beyond the inner end thereof, and overlapping the adja- 10 cent portion of the "feed-board, as clearly shown in Fig. (5.

if is a deflector secured to the top of the feed-board 11, whereby the grain is deflected toward the center of the screen f and pre- I 5 vented from falling upon the side frames of the latter and escaping the screening action.

The bar 7L2 fits against the end of the deflector i ]L3 when the extension H is employed, and

forms a continuation of said deflector.

In operating upon light material it is dcsirable to discharge the same at or near the center of the screen f, in which case the removable extension H is employed, while in operating upon heavy material,which requires 2 5 a more thorough screening, it is desirable to discharge the material upon the inner end of the screen. In this case the extension H is removed from the shoe by simply lifting its pins it out of the inclined notches h. By in- 0 clining the latter, as shown, the inner end of the extension H is firmly held against the adjacent end of the feed-board I l when the extension is arranged in the shoe.

The upper shaking-shoe vibrates longitudi- 5 nally, and is supported near its inner end by ordinary hangers, 11, and near its outer end by vertically-adj ustable hangers J. Each hanger J is pivoted at its lower end to the shoe B, and is provided at its upper end with a stud or pin,j, which adapted to engage in one of a series of semicircular notches or bearings, 7.; 7; 73, formed in a curved plate, K, secured to the side of the casing a. The upper ends of the hangers J pass through curved slots Te 5 formed in the plates K, and bear against the outer sides of said plates.

The notches k k is? are arranged at different elevations on the plate K, the notch labeing higher than the notch 71;, and the latter higher than the notch 1. so that by placing the pins j of the hangers J into a higher or lower notch the outer end of the shoe will be given a vertical throw of greater or less extent. In this manner the inner end of the screen f receives a rising-and-falling motion, which, in conjunction with its longitudinal vibration, tosses the grain forwardly and upwardly into the blast produced by the fan, thereby enabling the latter to effect a more thorough separation of the light from the heavy material and effectually preventing the meshes ot the screen from becoming clogged. The notches k 7; Marc so arranged that they will be concentric with the lower pivots of the hangers J when the latter are at the outer extreme of their movement, as shown in Fig. 2.

sc ne In. treating dry material the studs of the adjustable hangers J are arranged in the middle notch, 7r, while when damp material is treated, which is liable to clog the meshes of the screen, the hangers are arranged in either of the notches 7tk as may be necessaryto give the screen the requisite throw to sufficiently agitate the material and-to prevent clogging.

L represents plates hinged to the outer sides of the plates K, and provided at their lower edge with semicircular notches or bearings I, which coincide with the notches of the plates K when the plates L rest against the same. The notches I bear against the upper side of the pins j of the hangers, and prevent the pins from being accidentally moved out of their bearings. I

m m represent the screens of the lower shoe, 0. The lower screen, in, is provided at its outer end with laterally-projecting pins, which engage in one of a series of notches, 072?, formed in the end of the side frames of the screen, so that the lower end of the screen can be raised and lowered to change its inclination, as may be desired. The upper cross-bar, m, of the screen 071' engages behind a cross-piece, m secured to the shoe 0, and thereby holds the screen against longitudinal movement in the shoe. The upper screen, 912, is provided at its outer end with laterally-projecting pins 12, which engage in one of a series of undercut notches, it, formed in metallic plates 01 secured to the innerside of the shoe at the outer end thereof, 7

whereby the outer end. of the screen can be adjusted vertically to give the same the proper angle. The tail end of the upper screen, m, abuts against the upper end of the lower screen, m. The lower shoe, (3, also vibrates lengthwise of the machine, and is supported at its upper end by ordinary hangers, O, pivoted to the side of the case a, and at its opposite end by adjustable hangers 0, similar to the hangers J of the upper shaking-screen, so as to have a compound longitudinal and vertical movement like the latter.

19 represents a vertical rock-shaft supported at its ends in bearings 19, attached to the main frame A of the machine. This rockshaft is set in motion by a connecting-rod, 10 which is attached at one end to a crank-disk, 19 on the fan-shaft'd', and at its opposite end to an arm, q, secured to the outer side of the rock-shaft p.

q is an arm secured to the rock-shaft p at right angles to the arm q, and g is a connecting-rod extending from the arm q inwardly through an opening in the lower side board, a, and which connects at its inner end with a toggle, r 8, arranged longitudinally underneath the upper shoe, B, and attached with one of its links to the shoe and with the other to a bearing secured to a cross-piece, T of the casing. The rocking movement of the shaft 19 produces a reciprocating movement in the rod g and a lateral movement in the tog- IIO gle rs, which latter swings outwardly onboth sides of the longitudinal center line of the shoe, as indicated by dotted lines in Fig. 5, producing two strokes of the shaking-shoe for every revolution of the crank-disk p and imparting a short and rapid vibratory movement to the shoe.

The lower shoe, G, is actuated from an arm, f, secured to the rock-shaft 1) by means of a connecting-rod, i, and toggle t i in a manner similar to the upper shoe, B. The link i of the toggle is pivoted to a cross-piece arranged in the lower portion of. the machine, and the link 6 is pivoted to an arm, 1, secured to the under side of the screen.

I claim as my inventiou 1. The combination, with the fan'shait d and fan-blades E, of the hub E, mounted on said shaft and provided with sockets e, and the outwardlydiverging arms 6, secured with their inner ends in said sockets and with their outer ends to the fan-blades, substantially as set forth.

The combination, with the upper shaking-shoe, provided in its sides with notches h, of the feed-board H, secured to said shakingshoe, and a removable extension, II, having pins 7L engaging in the notches h, and provided with asupporting-bar, 71- overlapping the end of the feed-hoard H, substantiall;- as setforth.

3. The combination, with the shaking-shoe 13', provided in its sides with inclined notches h, and the feed-board H, provided with a deflee [01371 of the removable extension H, having pins h engaging in the notches h, and provided with a supporting-bar, 7L overlapping the outer end of the feed-board and forming a continuation of the deflector 723, sub stantially as set forth.

4:. The combination, with the lower shoe, 0, provided at its upper end with a plate having a series of undercut notches, n, and at its lower end with a series of notches, m of the lower screen, m, provided at its lower end with supporting-pins engaging in the notches m and having an upper cross-bar engaging with a cross-piece, m", secured to the frame of the shoe, and an upper screen, m, abutting with its lower end. against the lower screen, m, and provided at its upper end with supportingpins engaging in the undercut notches a, substantially as set forth.

5. The combination, with the stationary frame and shaking-shoe, of adjustable hangers J pivoted at one end to the shoe and provided at their opposite ends with pins j, plates K, having an opening or slot in which the upper portions of the hangers are arranged, and with a series of notches, 7c 7; R for receiving said pins, and plates L, hinged to the plates K and hearing with their lower edges upon said pins, substantially as set forth.

6. The combination, with the stationary frame and a longit-udinally-vibrating shoe, of longitudinal toggle-links connecting the shoe with the stationary frame, a transverse driving-shaft havin a crank-disk, an upright rockshaft havin two aetuatingarms arranged about at right angles to each other, a rod connecting one of said arms with said crank-disk, and a rod connecting the other arm of the upright shaft with said toggle-links at or near the joint thereof, substantially as set forth.

Witness my hand this 26th day of March, 1888.

JOHN A. KRAKEi lVitnesses:

FRED. C. GEYER, CHESTER D. Howe. 

